Balling Phenomenon in Metallic Laser Based 3d Printing Process

A comprehensive model is developed coupling major physical phenomena inherent to the Selective Laser Melting process together with a 3D numerical model based on the discrete element method to study the effect of the process parameters on the generation of balling droplets in the laser melting process. Effects of several process parameters as well as material properties on the balling phenomenon are investigated. Simulation results compare well to the experimental findings in the literature. © 2021 Elsevier Masson SAS